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Ht1250

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N9JIG

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#2
My HT1250's will do at least 450-490. High UHF split radios do not go below 450, so you can't use them on 440.

Low UHF split units will not go over 470 but will do the 440 ham band.

I haven't tried going over 490 on my HT1250's since my area doesn't require that.
 

N1GTL

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#3
One of my HT1250 model numbers: AAH25RDF9AA5AN

The "R" in the 6th position designates 403 - 470 MHz
Radios with an "S" in that position designate 450 - 512 MHz
 
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#4
Yes, a "S" split radio will go as high as 512mhz. Though, there isn't much up that high in most areas, congested areas such as high population cities will probably use frequencies up that high. Technically speaking, all HT1250's can DO 403-512mhz its just a matter of reliability of the RF section of the radio, since 403-470mhz radios aren't designed to be used up that high, problems such as poor Rx, poor Tx or VCO unlock can occur, and visa versa. Of course, this is not to mention the firmware and codeplug modifications that need to be made to force the radio to do the different split.
 
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